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on the end of the cylinder head toward the drivers side of the car. it runs off the front or intake camshaft. right where the valve cover . meets the head. its kind of round and is held on by two bolts. its easy to change

Did you check your camshaft position sensor circuits to see if they were working correctly or test the sensor itself before going out and replacing the sensor?....Didn't think so....

Lesson learned here? Diagnostic Test Codes (DTCs) DO NOT tell you what parts to replace. They only tell you which systems or circuits in your vehicle are not working as they should be. Then it is up to the person diagnosing the car to determine what is actually CAUSING the system or circuit to malfunction......Of coarse, this requires that you must first understand how the system is supposed to work...

Anyway, with some proper diagnosis, I think you will probably find that your cam sensor code (P0340) is being caused by a broken timing belt.(If the cam does not turn, the cam sensor does not produce a signal, and the computer has a problem with that).

For a 2.7 liter six cylinder engine, the camshaft position sensor is located in the front or on the right side of the front engine head. Be sure the engine is cool before you start to remove it. It's fairly easy to change, just in an awkward spot to get to. You can see the connector on the front of the head just right under the top radiator hose. The sensor is held in with a 13mm bolt that has a wiring support tab attached to the top. Remove the wire support tab and then remove the bolt. After the bolt is out, just pull the sensor out with you fingers. A new sensor from the dealer will run around $55.00. Good luck and hope this helps. keep me posted, be glad to help.